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Piston Pressure Switch
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Piston Pressure Switch

Piston Pressure Switch

The HNP10-B is a compact mechanical pressure switch for pressure monitoring in hydraulic and pneumatic systems. It uses either a diaphragm or piston sensing element to deliver stable switching performance with both liquids and gases in demanding industrial applications. The durable metal housing, high contact rating, and adjustable pressure range up to 250 bar make it a common choice for pumps, compressors, machine tools, and mobile equipment. Multiple process connections, housing materials, and pressure ranges are available for OEM customization and project-specific needs.

Hongnuo (shenyang) General Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of piston pressure switch in China. Welcome to buy high quality piston pressure switch at competitive price from our factory. We also accept customized orders.

 

 

Products Description

 

 

Parameter Specification
Pressure range 6…40 bar to 40…250 bar
Max pressure resistance:

250 bar

Output type: SPDT (NO+NC)
Repeatability:

≤ ±3%

Ambient temperature:

–20 °C to +85 °C

 

Please see the Specifications for more details. 

>View all specifications

 

 

 

Typical Applications

 

 

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Hydraulic Power Units: Pressure monitoring, pump start/stop control, overpressure protection, and hydraulic system safety interlocks.

 

Air Compressor Systems: Automatic compressor control, receiver tank pressure regulation, low-pressure alarm, and high-pressure protection.

 

Industrial Pumps: Pump automation, pipeline pressure maintenance, dry-run prevention, and pressure-based pump sequencing.

 

 

 

 

Why Choose Mechanical pressure switches ?

 

 

Mechanical pressure switches use mechanical structures such as springs, diaphragms, or pistons for pressure detection, without complex electronic components. They can operate stably for extended periods even in harsh industrial environments. Their mature and reliable mechanical structure ensures stable contact action, making them suitable for frequent start-stop control. They have low maintenance costs and can withstand instantaneous pressure surges and fluctuations, making them suitable for high-load conditions such as hydraulic systems, air compressors, and industrial pumps, and supporting harsh operating environments.

 


 

Why Engineers Choose Mechanical pressure switch

 

  • Small footprint, fits tight installation spaces.
  • Stable switching performance with good repeatability.
  • Works with both hydraulic oil and compressed air.
  • Heavy-duty SPDT contact for reliable equipment control.
  • Rugged metal housing, built for industrial environments.

 

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Key Advantages

 

 

  • Automatic pressure control
  • Equipment safety protection
  • Pressure monitoring and alarm
  • Stable and reliable operation
  • Suitable for harsh industrial environments

 

 

HNP10-B Mechanical Pressure Switch

Specific Parameters

Value / Description

Measurement Principle

The series pressure switch uses a diaphragm (low pressure) or piston (high pressure) measuring element, suitable for gas or liquid pressure detection. When the pressure reaches the set value, the moving part will trigger a micro switch with spring support, which can be panel mounted and can measure neutral gases, air, lubricating oil, engine oil and other media.

Connection Method

G1/4 thread, customized

Enclosure Material

Aluminum/Steel/Stainless Steel optional

Process Connection Material

Aluminum/Steel/Stainless Steel optional

Wetted Material

Wetted material: NBR/aluminum/steel/stainless steel

Wiring Method

Solenoid Valve Connector

Repeatability

≤±3%(Related to the set value)

Measurement Range

6-40bar, 10-70bar, 20-150bar, 40-250bar, Custom

Switching Capacity

Signal Light OFF: 30VDC, 2A 250VAC, 3A
Signal Light ON: 24-250VAC, 0.6A

Medium Temperature Range

-20-80℃

Ambient Temperature Range

-20-85℃

Pipe Material

PFA, PTFE, Teflon, PP, PVDF, PA and other rigid tubing materials

Output

Gold-plated Micro Switch SPDT
(Normally Open + Normally Closed)

Contact Capacity

250Vac,3A

Certification

CE

 

product-1600-2043

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